By Dusty Sonnenberg, CCA, Ohio Field Leader, a project of the Ohio Soybean Council and soybean check-off
Each year soybean cyst nematodes rob millions of dollars of income from soybean farmers due to lost yield. To add insult to injury, the impact to the crop cannot typically be seen until harvest. It is likely that above ground SNC stress symptoms may never be noticed. The best way to minimize SCN impact is by planting resistant varieties, or varieties with multiple resistances.
The SCN lifecycle is very interesting.
“The nematode overwinters as eggs,” said Horacio Lopez Nicora, assistant professor in plant pathology at The Ohio State University. “It will remain in the soil enclosed in the SCN female nematode body — which we call a cyst — until it hatches into a second stage juvenile. That is the only infective stage of the entire life cycle of the nematode. It is the only stage that the nematode can penetrate into a root of a soybean plant.”